2012 BMW 640 review
See also:
Look well ahead when driving
Avoid unnecessary acceleration and braking.
By maintaining a suitable distance to the vehicle
driving ahead of you.
Driving smoothly and looking ahead reduces
fuel consumption. ...
Fuel quality
Refuel with unleaded fuel only
Do not use leaded fuel as this would permanently
damage the catalytic converter.
Do not refuel with ethanol
Do not refuel with E85, i.e., fuel with an
ethanol c ...
Ventilation
Front ventilation
► Lever for changing the air flow direction, arrow 1.
► Thumbwheels for opening and closing the
vents continuously, arrows 2.
► Thumbwheel to vary the tempera ...
